[neovintage]

Interesting. I can think of a number of scenarios where this makes sense if you're using Redis for caching and you don't have a proxy in your architecture.

Does redis cluster only support one database? If that's still the case, then this is probably not available for the larger redis deployments.

[antirez]

Exactly, this is not available for Redis Cluster, even since the concept of atomically swapping cluster-wild would be more complex. When doing client-side sharding ala memcached for a plain caching scenario however, this can be applied, with the care needed to make sure that the application logic and consistency requirements, may tolerate that the DBs of the different masters are swapped potentially at different times.